424 GENERA OF FERNS. 
Fronds pinnate or bipinnate; pinne oblong, dimidiate, the 
superior margin fertile, entire or obtusely crenate, the cre- 
nules soriferous. Sporules angular. 
Species 1. S. recurvatum (Blume), (Lindsea serpens, Wall.) 
2. S. davallioides (Blume), (Lindszea lobulosa, Wall.) 3. S. 
obtusum, J. Sm. 
Illust. Hook. Gen. Fil. t. 101. 
Obs. Agreeing in habit with Lindsea, but differing in the 
venules being simply anastomosed, similar in that respect to 
Schizoloma, but differing from that genus by the midrib 
being excentric and bearing the sori on the superior margin 
only. 
102. ODONTOLOMA, J. Sm. 
(Davallie sp. Presl. Lindsee sp. Reinw.). 
Costa excentric or wanting. Veins forked ; venules direct, 
their apices free and sporangiferous. Special indusium sub- 
rotund, shorter than the indusiiform margin. Sori round, 
confluent or distant. 
Fronds pinnate or bipinnate ; pinne oblong-dimidiate, the 
superior margin nearly entire, or dentate, or laciniated, the 
dents and segments obtuse and unisorous, distant or conti- 
guous, and then forming a marginal row. 
Species. 1. O. tenuifolium (Reinw). 2. O. Boryanum 
(Presi). 3. O. pulchellum, J. Sm. 4. O. Hookeri, J. Sm. 
(Davallia sp. Hook. et Grev. Ic. Fil. sub. t. 143.) 
Iilust. Hook. et Grev. Ic. Fil. t. 143. 
Obs. 'These species agree in habit and venation with true 
Lindsee, but on account of the superior margin of the pinne 
being crenate or more divided, the apices of the venules are 
not combined; each venule bearing on its apex a simple 
round sorus, which may be viewed as characteristic of the 
following genus Davallia ; Odontoloma differing from that 
genus by its indusium being attached by its base, only 
the sides being free. "This genus may be viewed as exhibit- 
ing the same relation with Lindsea, that Cheilanthes does 
with Pteris, 
